1 1/2 to 2 inches

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Admirable Grasshopper on grass stem

Admirable Grasshopper

Syrbula admirabilis

image of Walker's Cicada clinging to a perch

Annual Cicadas

Neotibicen spp. (in Missouri) (formerly Tibicen)

Photo of adult antlion with wings spread

Antlion Adults

More than 100 species in North America north of Mexico

brokenray

Arkansas Brokenray

Lampsilis reeveiana

Asian longhorned beetle male, specimen

Asian Longhorned Beetle

Anoplophora glabripennis

Invasive

image of Bee Fly on leaf

Bee Flies

About 800 species in North America

Photo of a belted crayfish, also called Big River crayfish.

Belted Crayfish (Big River Crayfish)

Faxonius harrisonii (formerly Orconectes harrisonii)

Photo of a Big Creek crayfish.

Big Creek Crayfish

Faxonius peruncus (formerly Orconectes peruncus)

Image of a female Argiope garden spider.

Black-and-Yellow Garden Spider

Argiope aurantia

Bluefer

Bluefer (Purpleshell)

Potamilus purpuratus

Closeup of brown recluse spider on floor.

Brown Recluse (Violin Spider)

Loxosceles reclusa

Venomous

Gray, speckled, translucent gelatinous blob cut in half to show structure

Bryozoans (Moss Animals)

Freshwater species in the phylum Bryozoa

butterfly

Butterfly

Ellipsaria lineolata

image of Caddisfly on leaf

Caddisflies

Various species in the order Trichoptera

Photo of a papershell crayfish, also called calico crayfish.

Calico Crayfish (Papershell Crayfish)

Faxonius immunis (formerly Orconectes immunis)

Photo of a Caney Mountain cave crayfish out of water on a wet, red-coated cave rock.

Caney Mountain Cave Crayfish

Faxonius stygocaneyi (formerly Orconectes stygocaneyi)

Image of Chinese mantis.

Chinese Mantis

Tenodera aridifolia

Photo of two Chinese mystery snails, on a white background, with a ruler nearby for scale.

Chinese Mystery Snail

Cipangopaludina chinensis malleata (syn. Bellamya chinensis)

Invasive

Photo of eyed click beetle on bark

Click Beetles

Approximately 1,000 species in North America

Photo of a coldwater crayfish.

Coldwater Crayfish

Faxonius eupunctus (formerly Orconectes eupunctus)

Endangered

image of a Common True Katydid

Common True Katydid

Pterophylla camellifolia

image of Crane Fly clinging to a twig

Crane Flies

There are over 500 species of crane flies in North America.

Photo of a spothanded crayfish viewed from above on white background.

Crayfishes

About 36 species in Missouri

Photo of an adult damselfly on a twig next to water.

Damselflies

Species in the suborder Zygoptera

deertoe

Deertoe

Truncilla truncata

Photo of a devil crayfish.

Devil Crayfish

Lacunicambarus aff. diogenes

Image of a differential grasshopper.

Differential Grasshopper

Melanoplus differentialis

Photo of a digger crayfish.

Digger Crayfish

Creaserinus fodiens (formerly Fallicambarus fodiens)

Photo of a male Banded Pennant dragonfly

Dragonflies

Species in the suborder Anisoptera

Photo of a dragonfly larva resting on a stone.

Dragonfly Larvae

Species in the suborder Anisoptera

Photo of eastern dobsonfly

Eastern Dobsonfly

Corydalus cornutus

Photograph of Ebonyshell freshwater mussel shell exterior view

Ebonyshell

Fusconaia ebena

Endangered

elephant's ear

Elephantear

Elliptio crassidens

Endangered

elktoe

Elktoe

Alasmidonta marginata

ellipse

Ellipse and Bleedingtooth

Venustaconcha ellipsiformis and V. pleasii

Photo of male and female European wood wasps on pine stump

European Wood Wasp (Sirex Woodwasp)

Sirex noctilio

Invasive

fatmucket

Fatmucket

Lampsilis siliquoidea

image of a Summer Fishfly

Fishflies

Chauliodes, Neohermes, and Nigronia spp. (in eastern US)

Photo of a fishfly larva crawling among rocks in an aquarium.

Fishfly Larvae

Chauliodes, Neohermes, and Nigronia spp. (in eastern US)

fragile papershell

Fragile Papershell

Leptodea fragilis

Photo of a freckled crayfish.

Freckled Crayfish

Cambarus maculatus

Monkey Face Mussel

Freshwater Mussels

Bivalve molluscs in order Unionoida

giant floater

Giant Floater

Pygandon grandis

Image of a giant red-headed centipede.

Giant Red-Headed Centipede

Scolopendra heros

Venomous

Photo of a giant water bug

Giant Water Bugs

Species in the genera Abedus, Belostoma, and Lethocerus

Venomous

Photo of several prosobranch pond snails crawling on a rock.

Gilled Aquatic Snails (Prosobranch Pond Snails)

Over 20 Missouri species in former subclass Prosobranchia

Photo of a golden crayfish viewed through the surface of creek water.

Golden Crayfish

Faxonius luteus (formerly Orconectes luteus)

Photo of a grassland crayfish, also called prairie crayfish.

Grassland Crayfish (Prairie Crayfish)

Procambarus gracilis

Photo of a gray-speckled crayfish.

Gray-Speckled Crayfish

Faxonius palmeri (formerly Orconectes palmeri)

image of Fiery Searcher on dead leaves

Ground Beetles

About 2,400 species in North America north of Mexico

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